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Primary Examiner: Moyer, Donald B.
Assistant Examiner:
Attorney: Connolly and Hutz

Next ten patents ordered by date:

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Title: Process for preparing 3-anilino-pyrazolones-(5)

Abstract: Anilinopyrazolone are to be prepared in high yields and with a high degree of purity by reacting a salt particularly hydrochloride of a .beta.-arylamino-.beta.-imino-propionic acid ester of one of the tautomeric formulae which are defined hereinafter with a suitable substituted hydrazine.

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Other info:

Inventors: Meier, Ernst (Munich, DT)
Glockner, Hans (Munich, DT)
Kuffner, Karl (Unterhaching, DT)
Boie, Immo (Cologne, DT)
Nittel, Fritz (Cologne, DT)

Application Number: 428670
Filing Date: 1973-12-27
Publication_date: 1976-01-06
Assignee: Agfa-Gevaert Aktiengesellschaft (Leverkusen-Bayerwerk, DT)
Primary Class(es): 548/368.7 544/60, 548/366.4
Other Classes:
US Patent Ref:
Other Refs: 1,449,2591,469,3602,106,1542,106,155

Oct, 1965	FR.
Feb, 1966	FR.
Jan, 1972	FR.
Jan, 1972	FR.

Other References: J. Am. Chem. Soc., Vol. 71, pp. 983-988, (1949).